AKBAR S.; DALVANDI S.; HEYDARI F.; MAGHASEDI M. On the Multiplicity of -1 and 1 in Signed Complete Graphs. Utilitas Mathematica , [S. l.], v. 116, 2020. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/1482. Acesso em: 7 may. 2026.